Vulnerability in Kernel: tcp: use alloc_large_system_hash() to allocate table_perturb
Summary
GSD-2022-1003253: tcp: use alloc_large_system_hash() to allocate table_perturb. Affects Kernel versions >= 4a3eefa399e675c4a5239497832a72733281a20f, < 9c1fb2e93844f0425dc1228e82884c7589f0468a. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers. The vulnerability in question affects the TCP (Transmission Control Protocol) module within the Kernel. TCP is a widely used transport protocol that ensures reliable and ordered delivery of data packets over IP networks. This vulnerability arises from the improper allocation of the table_perturb variable, which can lead to potential security risks.
Vulnerability Detail
The vulnerability arises from the improper allocation of the table_perturb variable in the TCP module of the Kernel. By not using the appropriate function, alloc_large_system_hash(), to allocate table_perturb, the system may be susceptible to security threats. The impact and attack plausibility of this vulnerability have not been proven yet. However, it is crucial to address this issue to maintain the security and stability of the system. This vulnerability was introduced in Linux Kernel version v5.15.41 and has been fixed in version v5.15.47 by commit 9c1fb2e93844f0425dc1228e82884c7589f0468a.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the vulnerability in the Kernel's TCP module, which involves the improper allocation of the table_perturb variable, can pose potential security risks. It is crucial to update the Linux Kernel to version v5.15.47 or later, which includes the necessary fix for this vulnerability. By keeping the system up to date, users can ensure the security and stability of their Linux-based systems. For further support and assistance with vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The impact of this vulnerability is not yet proven. However, it is essential to address it to maintain the security and stability of the system.
You can use Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation. Simply upload your manifest file, such as package-lock.json, to the Vulert Playground and it will provide information on any vulnerabilities detected.
Yes, a patch is available for this vulnerability. It has been fixed in Linux Kernel version v5.15.47 by commit 9c1fb2e93844f0425dc1228e82884c7589f0468a.
The Kernel is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between processes, and handles device drivers.
To update the Linux Kernel, you can follow the official documentation provided by your Linux distribution. Typically, it involves using package managers like apt or yum to install the latest Kernel version available for your distribution.
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